Construction block



FIG. 1 is a plan view of a first construction block (same from below).

FIG. 2 is a perspective view of the first construction block.

FIG. 3 is a front elevation of the first construction block.

FIG. 4 is a rear elevation of the first construction block.

FIG. 5 is an end elevation of the first construction block; and,

FIG. 6 is an end elevation (other end) of the first construction block.

The broken lines in the Figures are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a construction block, as shown and described. 